Safran Landing Systems

Messier-bugatti-dowty

Jérôme Fraval

David Frank

Xavier Jubert

Michael Benmoussa

Sébastien Ernis

Sébastien Meziane

Michaël Benmoussa

Donny Warint

Jubert Xavier

A method for unlocking a door of an aircraft landing gear movably mounted between an open position and a closed position includes, during a first sequence of opening the door that is locked in the closed position by a first attachment housing and a second attachment housing, controlling a first unlocking actuator to deactivate the first attachment housing, waiting a first waiting time greater than a time necessary for the door to initiate a passage from the closed position to the open position, so as to enable a detector to detect the door starting to open, detecting the door starting to open by the detector and whether there is a failure of the second attachment housing, and controlling a second unlocking actuator to deactivate the second attachment housing.

Method and device for unlocking a door of an aircraft landing gear

An emergency braking method for aircraft, comprising using a progressing parking brake controlled by a lever () that can be actuated by the pilot between a '0%' position in which the brakes are connected to the return pressure of the aircraft, and a '100%' position in which the brakes are connected to the feed pressure of the aircraft, the lever being blockable in the 100% position in order to provide parking braking when the aircraft is stationary. According to the invention, the emergency braking method being characterized in that it comprises:

Emergency braking method for an aircraft

The invention relates to a hydraulic valve comprising a body in which a bore is formed in order to receive a sleeve that includes sealing seats that cooperate with a wall of the bore to define hydraulically isolated chambers that are connected to hydraulic ports in the body, the sleeve including connection holes in order to connect at least certain chambers with the inside of the sleeve and receiving a movable element that is slidable between two end positions in order to slide in leaktight manner against an inside wall of the sleeve, wherein the sleeve includes at least one regulator hole that opens out inside the sleeve in such a manner as to be the first bore to be uncovered or the last bore to be blocked by one of the fitted portions of the movable element when said element slides from one position to another, said fitted portion having at least one face portion that presents a setback that passes over the regulator hole.

Hydraulic valve

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Viroflay, France

Jérôme Fraval